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- EMDB-42102: Structure of SCF-FBXL17-BACH1BTB E3 ligase complex -

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Entry
Database: EMDB / ID: EMD-42102
TitleStructure of SCF-FBXL17-BACH1BTB E3 ligase complex
Map dataThe composite EM map of SCF(CUL1RBX1SKP1)-FBXL17-BACH1BTB by combining focused refined FBXL17-BACH1BTB (filtered by DeepEMhancer) and global EM map.
Sample
  • Complex: The SCF-F-box protein with BACH1 BTB Domain, SCF-BFXL17-BACH1BTB
    • Protein or peptide: Cullin-1
    • Protein or peptide: S-phase kinase-associated protein 1
    • Protein or peptide: F-box/LRR-repeat protein 17
    • Protein or peptide: Transcription regulator protein BACH1
KeywordsSCF / FBXL17 / BACH1 / F-box protein / E3 ligase / LIGASE
Function / homology
Function and homology information


Regulation of HMOX1 expression and activity / Parkin-FBXW7-Cul1 ubiquitin ligase complex / F-box domain binding / PcG protein complex / ligand-activated transcription factor activity / cullin-RING ubiquitin ligase complex / positive regulation of ubiquitin protein ligase activity / Cul7-RING ubiquitin ligase complex / maintenance of protein location in nucleus / Loss of Function of FBXW7 in Cancer and NOTCH1 Signaling ...Regulation of HMOX1 expression and activity / Parkin-FBXW7-Cul1 ubiquitin ligase complex / F-box domain binding / PcG protein complex / ligand-activated transcription factor activity / cullin-RING ubiquitin ligase complex / positive regulation of ubiquitin protein ligase activity / Cul7-RING ubiquitin ligase complex / maintenance of protein location in nucleus / Loss of Function of FBXW7 in Cancer and NOTCH1 Signaling / regulation of smoothened signaling pathway / regulation of metabolic process / neural crest cell differentiation / SCF ubiquitin ligase complex / NFE2L2 regulating anti-oxidant/detoxification enzymes / SCF-dependent proteasomal ubiquitin-dependent protein catabolic process / ubiquitin ligase complex scaffold activity / protein quality control for misfolded or incompletely synthesized proteins / entrainment of circadian clock by photoperiod / Prolactin receptor signaling / protein monoubiquitination / cullin family protein binding / ubiquitin-like ligase-substrate adaptor activity / protein K48-linked ubiquitination / Nuclear events stimulated by ALK signaling in cancer / intrinsic apoptotic signaling pathway / Regulation of BACH1 activity / MAP3K8 (TPL2)-dependent MAPK1/3 activation / molecular function activator activity / SCF-beta-TrCP mediated degradation of Emi1 / NIK-->noncanonical NF-kB signaling / Vpu mediated degradation of CD4 / animal organ morphogenesis / Dectin-1 mediated noncanonical NF-kB signaling / Activation of NF-kappaB in B cells / Degradation of GLI1 by the proteasome / Iron uptake and transport / Negative regulation of NOTCH4 signaling / GSK3B and BTRC:CUL1-mediated-degradation of NFE2L2 / Heme signaling / Degradation of GLI2 by the proteasome / GLI3 is processed to GLI3R by the proteasome / FBXL7 down-regulates AURKA during mitotic entry and in early mitosis / Degradation of beta-catenin by the destruction complex / NOTCH1 Intracellular Domain Regulates Transcription / DNA-binding transcription repressor activity, RNA polymerase II-specific / CLEC7A (Dectin-1) signaling / SCF(Skp2)-mediated degradation of p27/p21 / Constitutive Signaling by NOTCH1 PEST Domain Mutants / Constitutive Signaling by NOTCH1 HD+PEST Domain Mutants / beta-catenin binding / FCERI mediated NF-kB activation / Interleukin-1 signaling / Orc1 removal from chromatin / RNA polymerase II transcription regulator complex / protein polyubiquitination / G1/S transition of mitotic cell cycle / Regulation of RUNX2 expression and activity / Cyclin D associated events in G1 / Regulation of PLK1 Activity at G2/M Transition / Circadian Clock / Antigen processing: Ubiquitination & Proteasome degradation / Downstream TCR signaling / nervous system development / Neddylation / protein-macromolecule adaptor activity / DNA-binding transcription activator activity, RNA polymerase II-specific / positive regulation of canonical NF-kappaB signal transduction / proteasome-mediated ubiquitin-dependent protein catabolic process / cell population proliferation / DNA-binding transcription factor activity, RNA polymerase II-specific / protein ubiquitination / chromatin remodeling / DNA-binding transcription factor activity / RNA polymerase II cis-regulatory region sequence-specific DNA binding / protein domain specific binding / DNA repair / centrosome / ubiquitin protein ligase binding / heme binding / regulation of DNA-templated transcription / chromatin / regulation of transcription by RNA polymerase II / negative regulation of transcription by RNA polymerase II / nucleoplasm / nucleus / plasma membrane / cytosol / cytoplasm
Similarity search - Function
BACH, basic leucine zipper (bZIP) domain / Basic leucine zipper domain, Maf-type / bZIP Maf transcription factor / Transcription factor, Skn-1-like, DNA-binding domain superfamily / : / Leucine-rich repeat, cysteine-containing subtype / Leucine-rich repeat - CC (cysteine-containing) subfamily / A Receptor for Ubiquitination Targets / F-box domain profile. / F-box-like domain superfamily ...BACH, basic leucine zipper (bZIP) domain / Basic leucine zipper domain, Maf-type / bZIP Maf transcription factor / Transcription factor, Skn-1-like, DNA-binding domain superfamily / : / Leucine-rich repeat, cysteine-containing subtype / Leucine-rich repeat - CC (cysteine-containing) subfamily / A Receptor for Ubiquitination Targets / F-box domain profile. / F-box-like domain superfamily / SKP1 component, dimerisation / S-phase kinase-associated protein 1 / SKP1-like, dimerisation domain superfamily / Skp1 family, dimerisation domain / F-box-like / F-box domain / Cullin protein neddylation domain / Cullin, conserved site / Cullin family signature. / Cullin repeat-like-containing domain superfamily / Cullin protein, neddylation domain / Cullin / Cullin protein neddylation domain / Leucine Rich repeat / Basic-leucine zipper (bZIP) domain signature. / Cullin / Basic-leucine zipper (bZIP) domain profile. / basic region leucin zipper / Cullin, N-terminal / Cullin homology domain / Cullin homology domain superfamily / Cullin family / Cullin family profile. / Basic-leucine zipper domain / Basic-leucine zipper domain superfamily / S-phase kinase-associated protein 1-like / SKP1 component, POZ domain / Skp1 family, tetramerisation domain / Found in Skp1 protein family / BTB/POZ domain / BTB domain profile. / Broad-Complex, Tramtrack and Bric a brac / BTB/POZ domain / SKP1/BTB/POZ domain superfamily / Leucine-rich repeat / Leucine-rich repeat domain superfamily / Winged helix DNA-binding domain superfamily / Winged helix-like DNA-binding domain superfamily
Similarity search - Domain/homology
Transcription regulator protein BACH1 / S-phase kinase-associated protein 1 / Cullin-1 / F-box/LRR-repeat protein 17
Similarity search - Component
Biological speciesHomo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.1 Å
AuthorsShi H / Cao S
Funding support United States, 1 items
OrganizationGrant numberCountry
Howard Hughes Medical Institute (HHMI) United States
CitationJournal: Cell / Year: 2024
Title: Recognition of BACH1 quaternary structure degrons by two F-box proteins under oxidative stress.
Authors: Shiyun Cao / Sheena Faye Garcia / Huigang Shi / Ellie I James / Yuki Kito / Hui Shi / Haibin Mao / Sharon Kaisari / Gergely Rona / Sophia Deng / Hailey V Goldberg / Jackeline Ponce / Beatrix ...Authors: Shiyun Cao / Sheena Faye Garcia / Huigang Shi / Ellie I James / Yuki Kito / Hui Shi / Haibin Mao / Sharon Kaisari / Gergely Rona / Sophia Deng / Hailey V Goldberg / Jackeline Ponce / Beatrix Ueberheide / Luca Lignitto / Miklos Guttman / Michele Pagano / Ning Zheng /
Abstract: Ubiquitin-dependent proteolysis regulates diverse cellular functions with high substrate specificity, which hinges on the ability of ubiquitin E3 ligases to decode the targets' degradation signals, i. ...Ubiquitin-dependent proteolysis regulates diverse cellular functions with high substrate specificity, which hinges on the ability of ubiquitin E3 ligases to decode the targets' degradation signals, i.e., degrons. Here, we show that BACH1, a transcription repressor of antioxidant response genes, features two distinct unconventional degrons encrypted in the quaternary structure of its homodimeric BTB domain. These two degrons are both functionalized by oxidative stress and are deciphered by two complementary E3s. FBXO22 recognizes a degron constructed by the BACH1 BTB domain dimer interface, which is unmasked from transcriptional co-repressors after oxidative stress releases BACH1 from chromatin. When this degron is impaired by oxidation, a second BACH1 degron manifested by its destabilized BTB dimer is probed by a pair of FBXL17 proteins that remodels the substrate into E3-bound monomers for ubiquitination. Our findings highlight the multidimensionality of protein degradation signals and the functional complementarity of different ubiquitin ligases targeting the same substrate.
History
DepositionSep 24, 2023-
Header (metadata) releaseNov 6, 2024-
Map releaseNov 6, 2024-
UpdateNov 20, 2024-
Current statusNov 20, 2024Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_42102.png

Downloads & links

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Map

FileDownload / File: emd_42102.map.gz / Format: CCP4 / Size: 110.4 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationThe composite EM map of SCF(CUL1RBX1SKP1)-FBXL17-BACH1BTB by combining focused refined FBXL17-BACH1BTB (filtered by DeepEMhancer) and global EM map.
Projections & slices

Image control

Size
Brightness
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Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.74 Å/pix.
x 300 pix.
= 222.9 Å		0.74 Å/pix.
x 300 pix.
= 222.9 Å		0.74 Å/pix.
x 300 pix.
= 222.9 Å

Surface

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Images are generated by Spider.

generated in cubic-lattice coordinate

Voxel sizeX=Y=Z: 0.743 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.233
Minimum - Maximum-0.058852576 - 1.6681236
Average (Standard dev.)0.0071688932 (±0.031073714)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin-4-4-3
Dimensions307308306
Spacing308307306
CellA: 228.844 Å / B: 228.101 Å / C: 227.35799 Å
α=β=γ: 90.0 °

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Supplemental data

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Mask #1

Fileemd_42102_msk_1.map
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Additional map: The composite EM map of SCF(CUL1RBX1SKP1)-FBXL17-BACH1BTB by combining...

Fileemd_42102_additional_1.map
AnnotationThe composite EM map of SCF(CUL1RBX1SKP1)-FBXL17-BACH1BTB by combining focused refined FBXL17-BACH1BTB and global EM map.
Projections & Slices
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Additional map: The global EM map of SCF(CUL1RBX1SKP1)-FBXL17-BACH1BTB generated by...

Fileemd_42102_additional_2.map
AnnotationThe global EM map of SCF(CUL1RBX1SKP1)-FBXL17-BACH1BTB generated by Non-uniform refinement in cryoSPARC.
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Additional map: The local refinement EM map of SCF(CUL1RBX1SKP1)-FBXL17-BACH1BTB with...

Fileemd_42102_additional_3.map
AnnotationThe local refinement EM map of SCF(CUL1RBX1SKP1)-FBXL17-BACH1BTB with a mask including the density of Fbxl17-BACH1BTB.
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Additional map: The DeepEMhancer filtered local refinement EM map of...

Fileemd_42102_additional_4.map
AnnotationThe DeepEMhancer filtered local refinement EM map of SCF(CUL1RBX1SKP1)-FBXL17-BACH1BTB with a mask including the density of Fbxl17-BACH1BTB.
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Half map: The half map of SCF-FBXL17-BACH1BTB complex generated by...

Fileemd_42102_half_map_1.map
AnnotationThe half map of SCF-FBXL17-BACH1BTB complex generated by Non-uniform reifnement in cryoSPARC.
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AxesZYX

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Half map: The half map of SCF-FBXL17-BACH1BTB complex generated by...

Fileemd_42102_half_map_2.map
AnnotationThe half map of SCF-FBXL17-BACH1BTB complex generated by Non-uniform reifnement in cryoSPARC.
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AxesZYX

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Sample components

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Entire : The SCF-F-box protein with BACH1 BTB Domain, SCF-BFXL17-BACH1BTB

EntireName: The SCF-F-box protein with BACH1 BTB Domain, SCF-BFXL17-BACH1BTB
Components
  • Complex: The SCF-F-box protein with BACH1 BTB Domain, SCF-BFXL17-BACH1BTB
    • Protein or peptide: Cullin-1
    • Protein or peptide: S-phase kinase-associated protein 1
    • Protein or peptide: F-box/LRR-repeat protein 17
    • Protein or peptide: Transcription regulator protein BACH1

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Supramolecule #1: The SCF-F-box protein with BACH1 BTB Domain, SCF-BFXL17-BACH1BTB

SupramoleculeName: The SCF-F-box protein with BACH1 BTB Domain, SCF-BFXL17-BACH1BTB
type: complex / ID: 1 / Parent: 0 / Macromolecule list: all
Source (natural)Organism: Homo sapiens (human)

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Macromolecule #1: Cullin-1

MacromoleculeName: Cullin-1 / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 88.501945 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: KQIGLDQIWD DLRAGIQQVY TRQSMAKSRY MELYTHVYNY CTSVHQSNQA RGAGVPPSKS KKGQTPGGAQ FVGLELYKRL KEFLKNYLT NLLKDGEDLM DESVLKFYTQ QWEDYRFSSK VLNGICAYLN RHWVRRECDE GRKGIYEIYS LALVTWRDCL F RPLNKQVT ...String:
KQIGLDQIWD DLRAGIQQVY TRQSMAKSRY MELYTHVYNY CTSVHQSNQA RGAGVPPSKS KKGQTPGGAQ FVGLELYKRL KEFLKNYLT NLLKDGEDLM DESVLKFYTQ QWEDYRFSSK VLNGICAYLN RHWVRRECDE GRKGIYEIYS LALVTWRDCL F RPLNKQVT NAVLKLIEKE RNGETINTRL ISGVVQSYVE LGLNEDDAFA KGPTLTVYKE SFESQFLADT ERFYTRESTE FL QQNPVTE YMKKAEARLL EEQRRVQVYL HESTQDELAR KCEQVLIEKH LEIFHTEFQN LLDADKNEDL GRMYNLVSRI QDG LGELKK LLETHIHNQG LAAIEKCGEA ALNDPKMYVQ TVLDVHKKYN ALVMSAFNND AGFVAALDKA CGRFINNNAV TKMA QSSSK SPELLARYCD SLLKKSSKNP EEAELEDTLN QVMVVFKYIE DKDVFQKFYA KMLAKRLVHQ NSASDDAEAS MISKL KQAC GFEYTSKLQR MFQDIGVSKD LNEQFKKHLT NSEPLDLDFS IQVLSSGSWP FQQSCTFALP SELERSYQRF TAFYAS RHS GRKLTWLYQL SKGELVTNCF KNRYTLQAST FQMAILLQYN TEDAYTVQQL TDSTQIKMDI LAQVLQILLK SKLLVLE DE NANVDEVELK PDTLIKLYLG YKNKKLRVNI NVPMKTEQKQ EQETTHKNIE EDRKLLIQAA IVRIMKMRKV LKHQQLLG E VLTQLSSRFK PRVPVIKKCI DILIEKEYLE RVDGEKDTYS YLA

UniProtKB: Cullin-1

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Macromolecule #2: S-phase kinase-associated protein 1

MacromoleculeName: S-phase kinase-associated protein 1 / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 18.679965 KDa
Recombinant expressionOrganism: Escherichia coli BL21 (bacteria)
SequenceString:
MPSIKLQSSD GEIFEVDVEI AKQSVTIKTM LEDLGMDDEG DDDPVPLPNV NAAILKKVIQ WCTHHKDDPP PPEDDENKEK RTDDIPVWD QEFLKVDQGT LFELILAANY LDIKGLLDVT CKTVANMIKG KTPEEIRKTF NIKNDFTEEE EAQVRKENQW C EEK

UniProtKB: S-phase kinase-associated protein 1

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Macromolecule #3: F-box/LRR-repeat protein 17

MacromoleculeName: F-box/LRR-repeat protein 17 / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 44.505512 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: CHREPPPETP DINQLPPSIL LKIFSNLSLD ERCLSASLVC KYWRDLCLDF QFWKQLDLSS RQQVTDELLE KIASRSQNII EINISDCRS MSDNGVCVLA FKCPGLLRYT AYRCKQLSDT SIIAVASHCP LLQKVHVGNQ DKLTDEGLKQ LGSKCRELKD I HFGQCYKI ...String:
CHREPPPETP DINQLPPSIL LKIFSNLSLD ERCLSASLVC KYWRDLCLDF QFWKQLDLSS RQQVTDELLE KIASRSQNII EINISDCRS MSDNGVCVLA FKCPGLLRYT AYRCKQLSDT SIIAVASHCP LLQKVHVGNQ DKLTDEGLKQ LGSKCRELKD I HFGQCYKI SDEGMIVIAK GCLKLQRIYM QENKLVTDQS VKAFAEHCPE LQYVGFMGCS VTSKGVIHLT KLRNLSSLDL RH ITELDNE TVMEIVKRCK NLSSLNLCLN WIINDRCVEV IAKEGQNLKE LYLVSCKITD YALIAIGRYS MTIETVDVGW CKE ITDQGA TLIAQSSKSL RYLGLMRCDK VNEVTVEQLV QQYPHITFST VLQDCKRTLE RAYQMGWTPN MSAASS

UniProtKB: F-box/LRR-repeat protein 17

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Macromolecule #4: Transcription regulator protein BACH1

MacromoleculeName: Transcription regulator protein BACH1 / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 13.839761 KDa
Recombinant expressionOrganism: Escherichia coli BL21 (bacteria)
SequenceString:
SVFAYESSVH STNVLLSLND QRKKDVLCDV TIFVEGQRFR AHRSVLAACS SYFHSRIVGQ ADGELNITLP EEVTVKGFEP LIQFAYTAK LILSKENVDE VCKCVEFLSV HNIEESCFQF LKF

UniProtKB: Transcription regulator protein BACH1

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

BufferpH: 7.5
GridModel: Quantifoil R1.2/1.3 / Material: COPPER / Mesh: 300 / Support film - Material: CARBON / Support film - topology: HOLEY / Pretreatment - Type: GLOW DISCHARGE
VitrificationCryogen name: ETHANE / Instrument: FEI VITROBOT MARK IV

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Electron microscopy

MicroscopeTFS KRIOS
Image recordingFilm or detector model: FEI FALCON IV (4k x 4k) / Average electron dose: 60.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 25.0 µm / Nominal defocus min: 5.0 µm
Sample stageSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: OTHER / Details: ab-initio reconstruction
Final reconstructionApplied symmetry - Point group: C1 (asymmetric) / Algorithm: BACK PROJECTION / Resolution.type: BY AUTHOR / Resolution: 3.1 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC / Number images used: 364786
Initial angle assignmentType: ANGULAR RECONSTITUTION / Software - Name: cryoSPARC
Final angle assignmentType: ANGULAR RECONSTITUTION / Software - Name: cryoSPARC
Final 3D classificationSoftware - Name: cryoSPARC

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Atomic model buiding 1

Initial model
PDB IDChain

6wcq

source_name: PDB, initial_model_type: experimental model

1ldj

source_name: PDB, initial_model_type: experimental model
RefinementSpace: REAL / Protocol: RIGID BODY FIT
Output model

PDB-8ubt:
Structure of SCF-FBXL17-BACH1BTB E3 ligase complex

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